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OpenStudy (anonymous):
If 7x + 3y = 10 then what is the value of 3x?
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OpenStudy (ikram002p):
7x=10-3y thus 3x=10-3y-4x ? you want it like this ?
OpenStudy (eric_d):
|dw:1411380049476:dw| Maybe, our nxt step is... substituting the above equation into \(3x\)
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